Mukuchina Koushaku Reijou to Reitetsuna Koutei: Zense Hirotta Kodomo ga Koutei ni Natteimashita

Also known as: 無口な公爵令嬢と冷徹な皇帝～前世拾った子供が皇帝になっていました～

by Bekio

A woman born with the appearance of a monster and living in a remote forest rescued a boy who was being attacked by a magical beast. The woman named the boy Ham, and Ham called her Pai. The happy life of two lonely people, however, did not last long, and the boy's beloved Pai, the only person who ever really loved him, was killed in front of him. Ham, whose real identity was the abandoned prince Alexei, fought to become emperor in revenge. Meanwhile, Pai was reincarnated as the duchess Eleonora, widely known as a quiet and secretive beauty. The two are reunited at a fateful ball without knowing anything about each other...?